Safety, Tolerability and Immunogenicity of INO-4800 for COVID-19 in Healthy Volunteers
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ClinicalTrials.gov Identifier: NCT04336410 |
Recruitment Status :
Completed
First Posted : April 7, 2020
Last Update Posted : April 15, 2022
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Condition or disease | Intervention/treatment | Phase |
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Coronavirus Infection | Drug: INO-4800 Device: CELLECTRA® 2000 | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 120 participants |
Allocation: | Non-Randomized |
Intervention Model: | Sequential Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Prevention |
Official Title: | Phase 1 Open-label Study to Evaluate the Safety, Tolerability and Immunogenicity of INO-4800, a Prophylactic Vaccine Against SARS-CoV-2, Administered Intradermally Followed by Electroporation in Healthy Volunteers |
Actual Study Start Date : | April 3, 2020 |
Actual Primary Completion Date : | February 10, 2022 |
Actual Study Completion Date : | February 10, 2022 |
Arm | Intervention/treatment |
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Experimental: Group 1: INO-4800
Participants will receive one ID injection of 1.0 milligram (mg) of INO-4800 followed by EP using the CELLECTRA® 2000 device per dosing visit.
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Drug: INO-4800
INO-4800 will be administered ID on Day 0, Week 4 and at the optional Booster Dose Visit. Device: CELLECTRA® 2000 EP using the CELLECTRA® 2000 device will be administered following ID delivery of INO-4800 on Day 0, Week 4 and at the optional Booster Dose Visit. |
Experimental: Group 2: INO-4800
Participants will receive two ID injections of 1.0 mg (total 2.0 mg per dosing visit) of INO-4800 followed by EP using the CELLECTRA® 2000 device per dosing visit.
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Drug: INO-4800
INO-4800 will be administered ID on Day 0, Week 4 and at the optional Booster Dose Visit. Device: CELLECTRA® 2000 EP using the CELLECTRA® 2000 device will be administered following ID delivery of INO-4800 on Day 0, Week 4 and at the optional Booster Dose Visit. |
Experimental: Group 3: INO-4800
Participants will receive one ID injection of 0.5 mg of INO-4800 followed by EP using the CELLECTRA® 2000 device per dosing visit.
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Drug: INO-4800
INO-4800 will be administered ID on Day 0, Week 4 and at the optional Booster Dose Visit. Device: CELLECTRA® 2000 EP using the CELLECTRA® 2000 device will be administered following ID delivery of INO-4800 on Day 0, Week 4 and at the optional Booster Dose Visit. |
- Percentage of Participants with Adverse Events (AEs) [ Time Frame: Baseline up to Week 52 (if not receiving an optional booster dose) or the 48 Week Post-Booster Dose Visit (if receiving an optional booster dose) ]
- Percentage of Participants with Administration (Injection) Site Reactions [ Time Frame: Day 0 up to Week 52 (if not receiving an optional booster dose) or the 48 Week Post-Booster Dose Visit (if receiving an optional booster dose) ]
- Percentage of Participants with Adverse Events of Special Interest (AESIs) [ Time Frame: Baseline up to Week 52 (if not receiving an optional booster dose) or the 48 Week Post-Booster Dose Visit (if receiving an optional booster dose) ]
- Change from Baseline in SARS-CoV-2 Spike Glycoprotein Antigen-Specific Binding Antibody Titers [ Time Frame: Baseline up to Week 52 (if not receiving an optional booster dose) or the 48 Week Post-Booster Dose Visit (if receiving an optional booster dose) ]
- Change from Baseline in Antigen-Specific Cellular Immune Response [ Time Frame: Baseline up to Week 52 (if not receiving an optional booster dose) or the 48 Week Post-Booster Dose Visit (if receiving an optional booster dose) ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Judged to be healthy by the Investigator on the basis of medical history, physical examination and vital signs performed at screening.
- Able and willing to comply with all study procedures.
- Screening laboratory results within normal limits or deemed not clinically significant by the Investigator.
- Body Mass Index of 18-30 kg/m^2, inclusive, at screening.
- Negative serological tests for Hepatitis B surface antigen (HBsAg), Hepatitis C antibody and Human Immunodeficiency Virus (HIV) antibody at screening.
- Screening electrocardiogram (ECG) deemed by the Investigator as having no clinically significant findings (e.g. Wolff-Parkinson-White syndrome).
- Use of medically effective contraception with a failure rate of < 1% per year when used consistently and correctly from screening until 3 months following last dose, be post-menopausal, be surgically sterile or have a partner who is sterile.
Exclusion Criteria:
- Pregnant or breastfeeding or intending to become pregnant or father children within the projected duration of the trial from screening until 3 months following last dose.
- Is currently participating in or has participated in a study with an investigational product within 30 days preceding Day 0.
- Previous exposure to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) or receipt of an investigational product for the prevention or treatment of COVID-19, middle east respiratory syndrome (MERS), or severe acute respiratory syndrome (SARS).
- In a current occupation with high risk of exposure to SARS-CoV-2 (e.g., health care workers or emergency response personnel having direct interactions with or providing direct care to patients).
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Current or history of the following medical conditions:
- Respiratory diseases
- Hypersensitivity or severe allergic reactions to vaccines or drugs
- Diagnosis of diabetes mellitus
- Hypertension
- Malignancy within 5 years of screening
- Cardiovascular diseases
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Immunosuppression as a result of underlying illness or treatment including:
- Primary immunodeficiencies
- Long term use (≥7 days) of oral or parenteral glucocorticoids
- Current or anticipated use of disease-modifying doses of anti-rheumatic drugs and biologic disease-modifying drugs
- History of solid organ or bone marrow transplantation
- Prior history of other clinically significant immunosuppressive or clinically diagnosed autoimmune disease
- Fewer than two acceptable sites available for intradermal (ID) injection and electroporation (EP) considering the deltoid and anterolateral quadriceps muscles.
- Reported smoking, vaping, or active drug, alcohol or substance abuse or dependence.
- Any physical examination findings and/or history of any illness that, in the opinion of the study investigator, might confound the results of the study or pose an additional risk to the patient by their participation in the study.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04336410
United States, Kentucky | |
Central Kentucky Research Associates | |
Lexington, Kentucky, United States, 40509 | |
United States, Missouri | |
Center for Pharmaceutical Research | |
Kansas City, Missouri, United States, 64114 | |
United States, Pennsylvania | |
University of Pennsylvania | |
Philadelphia, Pennsylvania, United States, 19104 |
Study Director: | Dr. Ning Jiang, MD PhD | Inovio Pharmaceuticals |
Responsible Party: | Inovio Pharmaceuticals |
ClinicalTrials.gov Identifier: | NCT04336410 |
Other Study ID Numbers: |
COVID19-001 |
First Posted: | April 7, 2020 Key Record Dates |
Last Update Posted: | April 15, 2022 |
Last Verified: | April 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Data dictionaries and all collected IPD will be stripped of identifiers and may be made available upon request. |
Supporting Materials: |
Study Protocol Informed Consent Form (ICF) |
Time Frame: | Anonymous IPD may be shared following or during the publication of summary data. Archival data may be accessed for up to 10 years following the end of the study. |
Access Criteria: | Those who request the anonymous IPD must provide a plan of study explaining how the data will be used. Requests may be sent to the Central Contact Person. Requests will be reviewed based on the potential for the planned use of the IPD for advancing scientific knowledge and theory. |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | Yes |
Device Product Not Approved or Cleared by U.S. FDA: | Yes |
DNA vaccine Electroporation |
Coronavirus Infections Coronaviridae Infections Nidovirales Infections |
RNA Virus Infections Virus Diseases Infections |